import Vue from 'vue'
import VueRouter from 'vue-router'
import Home from '../views/Home.vue'
import Login from '../components/Login.vue'

Vue.use(VueRouter)

const routes = [
  {
    path: "/",
    redirect: '/login'
  },
  {
    path: '/login',
    component: Login
  },
  {
    path: '/home',
    component: Home
  }
]

const router = new VueRouter({
  routes
})

//挂载路由导航守卫
router.beforeEach((to, form, next) => {
  //to 将要访问的路径
  //from 代表从哪个路径跳转过来
  //next 是一个函数，表示放行

  if(to.path === "/login") return next();
  //获取token
  const tokenStr = window.sessionStorage.getItem("token")
  if(!tokenStr) return next("/login")
  next()
})

export default router
